Fill in the blanks.
Charlie and Bryan have 11 stickers.
Charlie and Adam have 20 stickers.
Adam has four times as many as stickers as Bryan.
- Number of stickers that Adam has = _____ u
- 1 u = _____
- Number of stickers that Charlie has = _____
(a)
Change information into units.
Adam has four times as many as stickers as Bryan.
Number of stickers that Bryan has = 1 u
Number of stickers that Adam has = 4 u
(b)
Charlie + 1 u = 11 --- (1)
Charlie + 4 u = 20 --- (2)
(2) - (1)
4 u - 1 u = 20 - 11
3 u = 9
1 u = 9 ÷ 3 = 3
(c)
Number of stickers that Charlie has
= 11 - 1 u
= 11 - 3
= 8
Answer(s): (a) 4; (b) 3; (c) 8